Below is a message from the CorvAircraft archives ( http://www.maddyhome.com/corvairsrch/index.jsp ).
List-Post: krnet@list.krnet.org Date: 29-Jan-04 6:14 AM From: srmak...@aol.com Subject: CorvAircraft>VW Cranks Hi all. The subject of these cranks has been a sore spot with me since I broke a type 4 scat 78 mm in flight. at exactly 220 hours. I broke the next stocker too in about the same amount of time. Bob Lester (another vair Kr driver broke a revmaster crank at 200 hours or so. This seems to be the MAGIC number. Someone told me that this is why Hapi engines went under because they had to replace 80 thousand dollars worth of bad cranks on their engines. I don't know how true this is, but it must have some truth to it. I finally had Steve Bennett put in a force one hub and did not have a problem after that and it ran until I went with another conversion. Great Plains stuff seems to work well and Steve is a good friend of mine and a straight shooter.Regards, StevePS> Dan Diehl broke his type 4 crank on the way back from Oshkosh to Tulsa, same setup as mine and about the same hours._________________________________________________________